Rotor shaft outer diameter measuring gauge
By designing a rotor shaft outer diameter measuring fixture and employing technologies such as synchronizing rods and elastic elements, efficient, stable, and accurate measurement of the rotor shaft outer diameter has been achieved, solving the problems of low efficiency and low accuracy in existing technologies and meeting the needs of automated production.
Patent Information
- Application Number
- CN202423297704.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In existing technologies, the measurement of rotor shaft outer diameter slots is inefficient, inaccurate, and easily affected by human factors, making it difficult to meet the needs of automated production lines.
A rotor shaft outer diameter measuring fixture is designed, employing three sets of identical measuring devices and elastic elements to ensure that the probe always remains in contact with the bottom of the rotor shaft groove. Simultaneous measurement of multiple grooves is achieved through a synchronizing rod, and the measurement stability and accuracy are improved by combining a limiting device and a damping block.
It achieves efficient, stable and accurate measurement of rotor shaft outer diameter, reduces human operation errors, and improves the reliability of measurement results and adaptability to automated production.
Smart Images
Figure CN223636776U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of mechanical detection equipment, in particular to a rotor shaft outer diameter measuring gauge. BACKGROUND
[0002] The three-in-one technology mainly refers to the integration of a motor, a reducer and a motor controller, and is a core component of an electric vehicle. In this system, a gear set is an important component, and a rotor shaft is a key component for input in the gear set. The rotor shaft connects an electric rotor and a rotary edge stator, and plays an important role in transmitting torque and supporting the rotor.
[0003] At present, three grooves need to be formed on the outer wall of the rotor shaft during the machining process. In the industry, an ordinary outer diameter micrometer is generally used to measure the groove bottom diameter of the rotor shaft. This measurement method is usually completed manually by an operator, and only one groove position can be measured at a time. Therefore, complete data can be obtained only by sequentially measuring three groove positions. Although the outer diameter micrometer has high precision, it is difficult to ensure consistency of each measurement due to manual operation, and it takes a long time and has low work efficiency. In addition, the micrometer needs to be kept horizontal and aligned with the center line during measurement, which requires high skills of the manual operator. This manual measurement method not only is slow, but also is easily disturbed by human factors, resulting in large fluctuations in measurement results, poor repeatability and stability, and being unable to meet the needs of modern automated production lines. CONTENT OF THE UTILITY MODEL
[0004] In order to improve the measurement efficiency and accuracy, the utility model provides a rotor shaft outer diameter measuring gauge.
[0005] The rotor shaft outer diameter measuring gauge provided by the utility model adopts the following technical scheme:
[0006] A rotor shaft outer diameter measuring gauge, comprising a base;
[0007] A support seat connected with the base and used for supporting a workpiece;
[0008] A first measuring device, a second measuring device and a third measuring device, which are the same in structure and each comprise a micrometer, a first probe, a second probe and a synchronous rod, the first probe and the second probe are respectively arranged on the two sides of the support seat, the first probe is fixedly connected with the micrometer, the second probe is fixedly connected with the synchronous rod, and the synchronous rod is slidably connected with the micrometer, so that the movement distance of the synchronous rod can be measured;
[0009] A mounting device comprising a first mounting frame and a second mounting frame, the first probe is connected with the base through the first mounting frame, and the second probe is connected with the base through the second mounting frame; and
[0010] The elastic device comprises a first elastic member and a second elastic member, the first elastic member is arranged between the first measuring head and the first mounting frame, one end of the first elastic member is connected with the first mounting frame and the other end is connected with the first measuring head, and the first elastic member can keep the first measuring head in abutment with the groove bottom of the rotor shaft; the second elastic member is arranged between the second measuring head and the second mounting frame, one end of the second elastic member is connected with the second mounting frame and the other end is connected with the second measuring head, and the second elastic member can keep the second measuring head in abutment with the groove bottom of the rotor shaft.
[0011] By adopting the above technical scheme, when in use, the rotor shaft is placed on the support seat to ensure stable support of the workpiece. The first measuring device, the second measuring device and the third measuring device cooperate with each other to enable the three groove positions of the rotor shaft to be measured at the same time. Specifically, when the rotor shaft is placed on the support seat, the first measuring head and the second measuring head will move slightly, the first measuring head drives the micrometer to move, the second measuring head moves through the synchronous rod to change the degree of the micrometer, and the reading of the micrometer can be read. During the whole measurement process, the first elastic member can keep the first measuring head in abutment with the groove bottom of the rotor shaft at all times, and the second elastic member can keep the second measuring head in abutment with the groove bottom of the rotor shaft at all times, thereby reducing errors caused by improper manual operation and ensuring the stability of the measurement results. The rotor shaft outer diameter measuring gauge can not only accurately measure the outer diameter of the rotor shaft, but also ensure that the measuring head is in good contact with the groove bottom of the rotor shaft at all times during the measurement process, thereby improving the stability and accuracy of the measurement.
[0012] Preferably, the first elastic member is a first leaf spring, the first mounting frame is provided with the first leaf spring at both ends, the first leaf spring is vertically arranged, the bottom end of the first leaf spring is connected with the first mounting frame and the top end is connected with the first measuring head.
[0013] By adopting the above technical scheme, the first leaf spring can effectively ensure that the first measuring head is in stable contact with the groove bottom of the rotor shaft at all times, thereby improving the accuracy and reliability of the measurement. At the same time, the first leaf spring is vertically arranged and connected with the first mounting frame and the first measuring head, respectively, so that the pressure can be evenly distributed, thereby avoiding measurement errors caused by uneven local stress and further improving the measurement accuracy.
[0014] Preferably, the second elastic member is a second leaf spring, the second mounting frame is provided with the second leaf spring at both ends, the second leaf spring is vertically arranged, the bottom end of the second leaf spring is connected with the second mounting frame and the top end is connected with the second measuring head.
[0015] By adopting the above technical scheme, the second leaf spring is used as the second elastic member, so that the second measuring head can always maintain good contact with the bottom of the slot of the rotor shaft, and the measurement accuracy and stability are improved. Meanwhile, the two ends of the second leaf spring are connected with the second mounting frame and the second measuring head respectively, so that the perpendicularity and stability of the second measuring head during the measurement process are ensured, and the accuracy of the measurement result is further improved.
[0016] Preferably, a limiting device is arranged between the first measuring head and the first mounting frame and between the second measuring head and the second mounting frame. The limiting device connected with the first measuring head can limit the movement distance of the first measuring head, and the limiting device connected with the second measuring head can limit the movement distance of the second measuring head.
[0017] By adopting the above technical scheme, the limiting device connected with the first measuring head can ensure that the first measuring head does not exceed the predetermined movement range during the measurement process, thereby ensuring the accuracy and reliability of the measurement result. The limiting device connected with the second measuring head can also limit the movement distance of the second measuring head, thereby reducing the possibility of measurement error caused by excessive movement. This design not only improves the measurement accuracy, but also enhances the stability and durability of the equipment.
[0018] Preferably, the limiting device connected with the first measuring head comprises a movable rod, a first block and a second block. The movable rod is fixedly connected with the first measuring head, and the first block and the second block are fixedly connected with the first mounting frame. The first block and the second block are arranged on the two sides of the movable rod respectively, for limiting the movement range of the movable rod and making the deformation amount of the first leaf spring within a predetermined range.
[0019] By adopting the above technical scheme, the limiting device connected with the first measuring head can accurately control the movement distance of the first measuring head, so that the first measuring head does not excessively move or deviate from the contact surface during the measurement process, thereby improving the stability and accuracy of the measurement. Meanwhile, the limiting device can also effectively protect the first leaf spring, thereby reducing the possibility of damage caused by excessive deformation and prolonging the service life of the equipment.
[0020] Preferably, the support seat comprises a first support and a second support. The first support and the second support are arranged in a spaced manner. A protruding portion is arranged on the rotor shaft, and the protruding portion abuts against the side wall of the first support, for realizing accurate positioning of the rotor shaft.
[0021] By adopting the above technical scheme, the protruding portion on the rotor shaft abuts against the side wall of the first support, thereby realizing accurate positioning of the rotor shaft and improving the measurement accuracy and reliability.
[0022] Preferably, a first damping block is arranged between the first support and the rotor shaft. The first damping block is connected with the first support, for reducing the vibration of the rotor shaft.
[0023] By adopting the above technical scheme, the first damping block arranged between the first support and the rotor shaft can effectively slow down the vibration of the rotor shaft during measurement, thereby improving the measurement accuracy and stability.
[0024] Preferably, a second damping block is arranged between the second support and the rotor shaft, and the second damping block is connected with the second support and used for slowing down the vibration of the rotor shaft.
[0025] By adopting the above technical scheme, the second damping block arranged between the second support and the rotor shaft can effectively slow down the vibration of the rotor shaft, thereby improving the measurement accuracy and stability.
[0026] In summary, the present application has the following beneficial effects:
[0027] In use, the rotor shaft is placed on the support seat to ensure stable support of the workpiece. The first measuring device, the second measuring device and the third measuring device cooperate with each other to enable the three groove positions of the rotor shaft to be measured at the same time. Specifically, when the rotor shaft is placed on the support seat, the first probe and the second probe will both move slightly. The first probe moves the micrometer, and the second probe moves through the synchronous rod to change the degree of the micrometer. The reading of the micrometer can be read. During the entire measurement process, the first elastic member can always keep the first probe in abutment with the groove bottom of the rotor shaft, and the second elastic member can always keep the second probe in abutment with the groove bottom of the rotor shaft, thereby reducing errors caused by improper manual operation and ensuring the stability of the measurement results. The rotor shaft outer diameter measuring gauge can not only accurately measure the outer diameter size of the rotor shaft, but also ensure that the probe and the groove bottom of the rotor shaft always maintain good contact during the measurement process, thereby improving the stability and accuracy of the measurement. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 is a schematic view of the overall structure of a rotor shaft outer diameter measuring gauge.
[0029] Figure 2 is a schematic view of the structure of a first measuring device.
[0030] Figure 3 is a schematic view of an adjusting device.
[0031] BRIEF DESCRIPTION OF DRAWINGS:
[0032] 1, base; 11, support seat; 111, first support; 112, second support; 2, protrusion; 3, first measuring device; 31, micrometer; 32, first probe; 321, first moving frame; 33, second probe; 331, second moving frame; 34, synchronous rod; 4, second measuring device; 5, third measuring device; 6, adjusting device; 61, adjusting block; 611, adjusting hole; 62, adjusting bolt; 63, adjusting screw; 64, support plate; 641, clamping groove; 7, mounting device; 71, first mounting frame; 72, second mounting frame; 8, elastic device; 81, first leaf spring; 82, second leaf spring; 9, limiting device; 91, movable rod; 92, first block; 93, second block. DETAILED DESCRIPTION
[0033] In order to make the technical personnel in the art better understand the technical solutions in the specification, the technical solutions in the specification will be described clearly and completely in the following with reference to the drawings in the specification. Obviously, the described embodiments are only some of the embodiments of the present application, not all.
[0034] In the description of the embodiments of the present application, the words such as "for example" or "for instance" are used to represent an example, illustration or description. Any embodiment or design scheme described as "for example" or "for instance" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words such as "for example" or "for instance" are intended to present the relevant concept in a specific way.
[0035] In the description of the embodiments of the present application, the term "a plurality of" means two or more. For example, a plurality of systems means two or more systems, and a plurality of screen terminals means two or more screen terminals. In addition, the terms "first" and "second" are used for description purposes only, and should not be interpreted as indicating or implying relative importance or implicitly indicating the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. The terms "include", "contain", "have" and their variants mean "include but are not limited to", unless otherwise specifically emphasized.
[0036] A rotor shaft outer diameter measuring gauge, referring to Figure 1 , Figure 2 and Figure 3, including base 1, support seat 11, first measuring device 3, second measuring device 4, third measuring device 5, mounting device 7 and elastic device 8. The support seat 11 is connected with the base 1 and is used for supporting the workpiece. The first measuring device 3, the second measuring device 4 and the third measuring device 5 measure different slots of the rotor shaft respectively, the structures of the first measuring device 3, the second measuring device 4 and the third measuring device 5 are same, and all include micrometer 31, first probe 32, second probe 33 and synchronous rod 34. The first probe 32 and the second probe 33 are respectively arranged on the two sides of the support seat 11, the first probe 32 is fixedly connected with the micrometer 31, the second probe 33 is fixedly connected with the synchronous rod 34, and the synchronous rod 34 is slidably connected with the micrometer 31, so that the movement distance of the synchronous rod 34 can be measured.
[0037] With reference to Figure 1 , Figure 2 and Figure 3 , the mounting device 7 includes first mounting frame 71 and second mounting frame 72, the first probe 32 is connected with the base 1 through the first mounting frame 71, and the second probe 33 is connected with the base 1 through the second mounting frame 72. The elastic device 8 includes first elastic member and second elastic member, the first elastic member is arranged between the first probe 32 and the first mounting frame 71, one end of the first elastic member is connected with the first mounting frame 71 and the other end is connected with the first probe 32, so that the first probe 32 can keep abutting with the slot bottom of the rotor shaft, and the second elastic member is arranged between the second probe 33 and the second mounting frame 72, one end of the second elastic member is connected with the second mounting frame 72 and the other end is connected with the second probe 33, so that the second probe 33 can keep abutting with the slot bottom of the rotor shaft.
[0038] In use, the rotor shaft is placed on the support seat 11 to ensure stable support of the workpiece. The first measuring device 3, the second measuring device 4 and the third measuring device 5 are matched with each other, so that the three slot positions can be measured at the same time, the measurement efficiency and the reliability of data are improved. The first elastic member can keep the first probe 32 abutting with the slot bottom of the rotor shaft at all times, the second elastic member can keep the second probe 33 abutting with the slot bottom of the rotor shaft at all times, the error caused by improper manual operation is reduced, and the stability of the measurement result is ensured. In summary, the rotor shaft outer diameter measuring gauge can not only accurately measure the outer diameter size of the rotor shaft, but also ensure that the probe keeps good contact with the slot bottom of the rotor shaft at all times during the measurement process, and the stability and accuracy of the measurement are improved.
[0039] With reference to Figure 1 , the support seat 11 includes first support 111 and second support 112, the structures of the first support 111 and the second support 112 are same, and both are formed with containing grooves for placing the rotor shaft. The first support 111 and the second support 112 are arranged at intervals, the rotor shaft is arranged in the two containing grooves to support the rotor shaft.
[0040] With reference to Figure 1 , the first damping block is arranged in the holding groove of the first support 111, and two first damping blocks are arranged. Both of the two first damping blocks are half-inlaid in the first support 111. The first support 111 supports the rotor shaft through the two first damping blocks.
[0041] With reference to Figure 1 , the second damping block is arranged in the holding groove of the second support 112, and two second damping blocks are arranged. Both of the two second damping blocks are half-inlaid in the second support 112. The second support 112 supports the rotor shaft through the two second damping blocks.
[0042] During the placement of the rotor shaft, the first damping block and the second damping block cooperate with each other to effectively slow down the vibration of the rotor shaft during the measurement process, thereby improving the measurement accuracy and stability.
[0043] With reference to Figure 1 , the rotor shaft is provided with a protruding portion 2, the protruding portion 2 abuts against the side wall of the first support 111, and precise positioning of the rotor shaft is achieved.
[0044] With reference to Figure 1 , Figure 2 and Figure 3 , the first probe 32 is flat and vertically arranged. The first moving frame 321 is arranged between the first probe 32 and the dial gauge 31, and the first moving frame 321 is fixedly connected with the first probe 32 and the dial gauge 31.
[0045] With reference to Figure 1 , the direction perpendicular to the length direction of the rotor shaft is defined as the first direction x, the first probe 32 and the second probe 33 in the same device are distributed along the first direction x, and are symmetrically arranged about the rotor shaft.
[0046] With reference to Figure 2 and Figure 3 , the first mounting frame 71 is arranged below the first moving frame 321 and is fixedly connected with the base 1. The first elastic member is a first leaf spring 81, and two first leaf springs 81 are vertically arranged and are perpendicular to the first direction x. The two first leaf springs 81 are respectively located on both sides of the first mounting frame 71 along the first direction x. The top end of the first leaf spring 81 is fixedly connected with the first moving frame 321, and the bottom end is fixedly connected with the first mounting frame 71.
[0047] The arrangement of the two first leaf springs 81 can first limit the moving direction of the first probe 32 and the first moving frame 321, so that the first probe 32 always moves on the vertical plane where the groove of the rotor shaft is aligned. Secondly, when measuring the rotor shaft, the first leaf spring 81 deforms, and the restoring force of the first leaf spring 81 can always make the first probe 32 abut against the groove bottom of the rotor shaft, thereby improving the measurement accuracy.
[0048] With reference to Figure 1 , Figure 2and Figure 3 The second probe 33 is flat and vertically arranged. The second probe 33 is fixedly connected with a second moving frame 331. A second mounting frame 72 is arranged below the second moving frame 331 and is fixedly connected with the base 1.
[0049] Referring to Figure 2 The second elastic member is a second leaf spring 82. Two second leaf springs 82 are vertically arranged and are perpendicular to the second direction x. The two second leaf springs 82 are respectively located on two sides of the second mounting frame 72 along the second direction x. The top end of the second leaf spring 82 is fixedly connected with the second moving frame 331, and the bottom end is fixedly connected with the second mounting frame 72.
[0050] The arrangement of the two second leaf springs 82 can first limit the moving direction of the second probe 33 and the second moving frame 331, so that the second probe 33 always moves on the vertical plane where the slot of the rotor shaft is aligned. Secondly, when measuring the rotor shaft, the second leaf spring 82 deforms, and the restoring force thereof can always make the second probe 33 abut against the bottom of the slot of the rotor shaft, thereby improving the accuracy of measurement.
[0051] Referring to Figure 3 Adjusting devices 6 are arranged between the first probe 32 and the first moving frame 321 and between the second probe 33 and the second moving frame 331. In the embodiment, the adjusting device 6 connected with the first probe 32 and the adjusting device 6 connected with the second probe 33 have the same structure. Therefore, the embodiment only details the adjusting device 6 connected with the first probe 32.
[0052] Referring to Figure 3 The adjusting device 6 comprises an adjusting block 61, an adjusting bolt 62, an adjusting screw 63, and a support plate 64. The adjusting block 61 is horizontally arranged, and the adjusting block 61 is slidably connected with the first moving frame 321, and the sliding direction is parallel to the first direction x. An adjusting hole 611 is vertically arranged on the adjusting block 61, and the cross section of the adjusting hole 611 is in a strip shape, and the length direction of the adjusting hole 611 is parallel to the first direction x.
[0053] Referring to Figure 3 The adjusting bolt 62 is arranged in two, and the two adjusting bolts 62 are threadedly connected with the first moving frame 321 through the adjusting hole 611. When the head of the adjusting bolt 62 abuts against the adjusting block 61, the fixing of the adjusting block 61 and the first moving frame 321 is realized.
[0054] Referring to Figure 3 The support plate 64 is vertically arranged on the side away from the rotor shaft. A clamping groove 641 is arranged on the top of the support plate 64 and penetrates through the opposite two side walls of the support plate 64. The adjusting bolt 62 is horizontally arranged, one end of the adjusting screw 63 is threadedly connected with the adjusting block 61, and the other end abuts against the support plate 64 through the clamping groove 641.
[0055] When the distance between the first probe 32 and the workpiece needs to be adjusted, only the adjusting screw 63 is rotated to move the adjusting block 61 away from or close to the rotor shaft, thereby achieving the position adjustment of the first probe 32. When the first spring 81 is deformed, the design of the clamping groove 641 will not interfere with the adjusting screw 63.
[0056] Referring to Figure 3 , the first mounting frame 71 and the first moving frame 321, and the second mounting frame 72 and the second moving frame 331 are both provided with a limiting device 9. In the embodiment, the two sets of limiting devices 9 are the same in structure, so the application only describes the limiting device 9 connected with the first mounting frame 71 in detail.
[0057] Referring to Figure 3 , the limiting device 9 connected with the first mounting frame 71 includes a movable rod 91, a first block 92 and a second block 93. The movable rod 91 is in the shape of a cuboid, and is vertically arranged. The movable rod 91 is arranged between the first moving frame 321 and the first mounting frame 71, and the top end of the movable rod 91 is fixedly connected with the first moving frame 321 and the bottom end is slidably abuts with the first mounting frame 71.
[0058] Referring to Figure 3 , the first block 92 and the second block 93 are both fixedly connected with the first mounting frame 71. The first block 92 and the second block 93 are spaced apart along the first direction x and are arranged on both sides of the movable rod 91. When the movable rod 91 abuts with the first block 92, the first spring 81 is in the normal state. When the movable rod 91 abuts with the second block 93, the first spring 81 is in the deformed state.
[0059] The first block 92 and the second block 93 cooperate with each other to accurately control the moving distance of the first probe 32, so as to ensure that the first probe 32 will not move excessively or deviate from the contact surface during the measurement process, thereby improving the stability and accuracy of the measurement.
[0060] Referring to Figure 3 , the first measuring device 3, the second measuring device 4 and the third measuring device 5 are all provided with a movable channel. The movable channel penetrates through the corresponding two first springs 81, the movable rod 91 close to the first probe 32 and the second spring 82 close to the support seat 11.
[0061] Referring to , the synchronous rod 34 is in the shape of a cylinder, and is horizontally arranged. The length direction of the synchronous rod 34 is parallel to the first direction x. The first end of the synchronous rod 34 is fixedly connected with the second moving frame 331 through the movable rod 91 close to the second probe 33. The second end of the synchronous rod 34 penetrates through the movable channel and is slidably connected with the micrometer 31, and the micrometer 31 can measure the moving distance of the synchronous rod 34. The width of the movable channel is greater than the diameter of the synchronous rod 34.
[0062] The use principle of the present application is as follows: when in use, the rotor shaft is placed on the support seat 11 to ensure stable support of the workpiece. The first measuring device 3, the second measuring device 4 and the third measuring device 5 are matched with each other, so that the three groove positions can be measured at the same time, improving the measurement efficiency and the reliability of the data. Moreover, the first elastic member can always make the first probe 32 abut against the groove bottom of the rotor shaft, and the second elastic member can always make the second probe 33 abut against the groove bottom of the rotor shaft, reducing the error caused by improper manual operation and ensuring the stability of the measurement result. In summary, the rotor shaft outer diameter measuring gauge can not only accurately measure the outer diameter size of the rotor shaft, but also can ensure that the probe always maintains good contact with the groove bottom of the rotor shaft during the measurement process, improving the stability and accuracy of the measurement.
[0063] In the process, the first probe 32 and the second probe 33 will move slightly when the rotor shaft is placed on the support seat 11, so as to cause relative displacement between the first probe 32 and the second probe 33, and the first probe 32 and the second probe 33 always abut against the rotor shaft during the whole process. At this time, the first probe 32 drives the micrometer 31 to move, the second probe 33 moves through the synchronous rod 34, and then the micrometer 31 is read to obtain the diameter of the groove bottom of the rotor shaft.
[0064] The embodiments of the specific embodiment are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A rotor shaft outer diameter measuring gauge, characterized by: The base (1) is provided with a support seat (11) for supporting a workpiece, a first measuring device (3), a second measuring device (4) and a third measuring device (5) for measuring the distance between the support seat (11) and the bottom of the rotor shaft, and a mounting device (7) for mounting the first measuring device (3) and the second measuring device (4) on the base (1). The base (1) is provided with a support seat (11) for supporting a workpiece, a first measuring device (3), a second measuring device (4) and a third measuring device (5) for measuring the distance between the support seat (11) and the bottom of the rotor shaft, and a mounting device (7) for mounting the first measuring device (3) and the second measuring device (4) on the base (1). The first measuring device (3), the second measuring device (4) and the third measuring device (5) are identical in structure and each comprises a dial gauge (31), a first measuring head (32), a second measuring head (33) and a synchronous rod (34), the first measuring head (32) and the second measuring head (33) are respectively arranged on the two sides of the support seat (11), the first measuring head (32) is fixedly connected with the dial gauge (31), the second measuring head (33) is fixedly connected with the synchronous rod (34), and the synchronous rod (34) is slidably connected with the dial gauge (31) to measure the moving distance of the synchronous rod (34). The mounting device (7) comprises a first mounting frame (71) and a second mounting frame (72), the first measuring head (32) is connected with the base (1) through the first mounting frame (71), and the second measuring head (33) is connected with the base (1) through the second mounting frame (72). The elastic device (8) comprises a first elastic member and a second elastic member, the first elastic member is arranged between the first measuring head (32) and the first mounting frame (71), one end of the first elastic member is connected with the first mounting frame (71) and the other end is connected with the first measuring head (32), so that the first measuring head (32) can abut against the bottom of the rotor shaft, and the second elastic member is arranged between the second measuring head (33) and the second mounting frame (72), one end of the second elastic member is connected with the second mounting frame (72) and the other end is connected with the second measuring head (33), so that the second measuring head (33) can abut against the bottom of the rotor shaft.
2. A rotor shaft outside diameter measuring gauge as claimed in claim 1, wherein: The first elastic member is a first leaf spring (81), the first mounting frame (71) is provided with the first leaf spring (81) at both ends, the first leaf spring (81) is vertically arranged, and the bottom end of the first leaf spring (81) is connected with the first mounting frame (71) and the top end is connected with the first measuring head (32).
3. The rotor shaft outside diameter measuring gauge according to claim 1, wherein: The second elastic member is a second leaf spring (82), the second mounting frame (72) is provided with the second leaf spring (82) at both ends, the second leaf spring (82) is vertically arranged, and the bottom end of the second leaf spring (82) is connected with the second mounting frame (72) and the top end is connected with the second measuring head (33).
4. The rotor shaft outside diameter measuring gauge according to claim 2, wherein: Limiting devices (9) are arranged between the first measuring head (32) and the first mounting frame (71) and between the second measuring head (33) and the second mounting frame (72), the limiting device (9) connected with the first measuring head (32) can limit the moving distance of the first measuring head (32), and the limiting device (9) connected with the second measuring head (33) can limit the moving distance of the second measuring head (33).
5. A rotor shaft outside diameter measuring gauge as claimed in claim 4 wherein: The limiting device (9) connected with the first probe (32) comprises a movable rod (91), a first block (92) and a second block (93), the movable rod (91) is fixedly connected with the first probe (32), the first block (92) and the second block (93) are fixedly connected with the first mounting frame (71), the first block (92) and the second block (93) are respectively arranged on two sides of the movable rod (91), for limiting the activity range of the movable rod (91), and making the deformation amount of the first leaf spring (81) in a preset range.
6. A rotor shaft outside diameter measuring gauge as claimed in claim 1, wherein: The support seat (11) comprises a first support (111) and a second support (112), the first support (111) and the second support (112) are arranged at intervals, a convex part (2) is arranged on the rotor shaft, the convex part (2) abuts against the side wall of the first support (111), for realizing accurate positioning of the rotor shaft.
7. A rotor shaft outside diameter measuring gauge as claimed in claim 6 wherein: A first damping block is arranged between the first support (111) and the rotor shaft, the first damping block is connected with the first support (111), for reducing the vibration of the rotor shaft.
8. A rotor shaft outside diameter measuring gauge as claimed in claim 6, wherein: A second damping block is arranged between the second support (112) and the rotor shaft, the second damping block is connected with the second support (112), for reducing the vibration of the rotor shaft.